/*
 * Copyright 2002-2019 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.ibm.ibank.shareddatasource;

import javax.sql.DataSource;

import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.support.TransactionSynchronizationManager;

/**
 * 共享数据库连接。只读事务下，不提交事务
 * 
 * @author WeiZhou
 *
 */
@SuppressWarnings("serial")
public class SharedDataSourceTransactionManager extends DataSourceTransactionManager {

	public SharedDataSourceTransactionManager() {
		super();
	}

	public SharedDataSourceTransactionManager(DataSource dataSource) {
		super(dataSource);
	}

	@Override
	protected void doBegin(Object transaction, TransactionDefinition definition) {
		TransactionSynchronizationManager.setCurrentTransactionReadOnly(definition.isReadOnly());
		super.doBegin(transaction, definition);
	}

//	@Override
//	protected void doCommit(DefaultTransactionStatus status) {
//		if (!TransactionSynchronizationManager.isCurrentTransactionReadOnly()) {
//			super.doCommit(status);
//		}
//	}

}
